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3 years ago

Which of the following is true about main and secondary memory?

Computers and Technology

1 answer:

Deffense [45]3 years ago

8 0

Answer:

Main memory is short term memory used by the CPU in processing commands, secondary memory is more permanent and used for storage.

Explanation:

Hey there so just a quick explanation here.

Main memory is not used for storage and secondary memory is not lost when the device's power is turned off.

That leaves you to two possibilities:

Main memory is more permanent and used for storage, secondary memory is short term memory is used by the CPU in processing commands.
Main memory is short term memory used by the CPU in processing commands, secondary memory is more permanent and used for storage.

The bolded bullet point is the correct answer because, main memory is what's know as RAM on your computer. It could either be 4GB, 8GB or maybe even 16GB of RAM. But this is known as Random Access Memory, this is data stored no on the hard drive but on the processor, only momentarily and used when the CPU needs it.

Secondary memory is your Hard Drive, typically 256GB, 500GB, or 1TB which is 1000GB's. But this data is stored on the Hard Drive or Solid State Drive (SSD) and it stays there even when the computer is shot off.

Kind of like our phones, we take pictures on a Friday night dancing with our friends, but our phone dies. Saturday morning we wake up and haha! We get to see all the funny pictures we took that night, so even though it shuts off, our data is saved and secured.

Hope this helps and Good luck !!

Happy Coding :)

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Explain the five generations of computer

liubo4ka [24]

Answer:

1 First Generation

The period of first generation: 1946-1959. Vacuum tube based.

2 Second Generation

The period of second generation: 1959-1965. Transistor based.

3 Third Generation

The period of third generation: 1965-1971. Integrated Circuit based.

4 Fourth Generation

The period of fourth generation: 1971-1980. VLSI microprocessor based.

5 Fifth Generation

The period of fifth generation: 1980-onwards. ULSI microprocessor based.

5 0

3 years ago

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You want to know your grade in Computer Science, so write a program that continuously takes grades between 0 and 100 to standard

Dominik [7]

Answer:

Following are the program in the Python Programming Language.

#declare variables and initialize to 0

s=0

n=0

avg=0

#set the infinite while loop

while(True):

#get input from the user

score=input()

#set if statement to break loop

if(score =="stop"):

break

#otherwise, perform calculation

else:

n+= 1

s=s+ int(score)

avg= s/n

#print average of the input

print ('average: ',avg)

<u>Output</u>:

stop

average: 50.75

Explanation:

<u>Following are the description of the program</u>.

Firstly, set three variable that is 's' for sum, 'n' for count and 'avg' for average and initialize them to 0.
Set the infinite while loop and inside it, set variable 'score' that get input from the user then, set the if conditional statement for break the loop, otherwise we calculate the sum of the user input and calculate its average.
Finally, we print the result with message.

6 0

3 years ago

Define the following Window class:

Olenka [21]

Answer:

The following Window class are given below:

class Window // define a class Window

{

private: //access modifier

int width, height; // integer type variable which is width and height

public: //access modifier

Window(int w,int h) //constructor that accepts two integer parameters

{

width = w;

height = h;

}

friend bool areSameSize(Window a, Window b)

{

if ((a.height == b.height) && (a.width == b.width))

return true;

else return false;

}

};

Explanation:

According to the question: Firstly we have define a class which name is 'Window' and then we take two integer type data member and after that we have constructor that takes two integer type parameters and after all we have a areSameSize, friend function, which can take two objects and then it give output in the form of true or false, if they are the equal size and finally we check that if the width and the height match then it returns the true and else it returns the false

3 0

4 years ago

What in the LAN for a small office, some user devices connect to the LAN using a cable, while others connect using wireless tech

dem82 [27]

Answer:

The ethernet protocol IEEE 802.3 is only meant for cable networks.

Explanation:

In this scenario, there are two types of networks, namely;

LAN and WLAN.

A LAN (local area network) is a network within a small area like a building, i which its workstation are connected using cables. The cabled network instantly use a protocol called Ethernet also known as IEEE 802.3.

WLAN (wireless local area network) is a small area network just like the LAN, but the difference is that its workstation are connected wireless (without cable). wireless networks uses wifi or 802.11a/n/g to connect to the network.

So, the ethernet protocol represents the cabled network, Wifi represents the wireless network.

8 0

3 years ago

Which function prompts the user to enter information?

Rzqust [24]

Answer:

input() prompts the user to enter information

6 0

3 years ago

Read 2 more answers